"The gall has been described and illustrated by Houard (1933) and later by Diaz & de Santis (1975). It is
subspherical or ovoidal, large, up to 35 mm in diameter, often only 13–18 mm, of spongy consistency becoming hard when mature, developing in twigs (Fig. 9A). It is plurilocular, enclosing many larval ellipsoidal cells disposed radially (Figs 9B, 9C). The galls we studied from Santiago del Estero and Formosa were fully developed in September. However, the galls collected in Mendoza matured later, in November or December."" (Nieves-Aldrey & Blas, 2015.)"